WP
Types
hemicolectomy right hemicolectomy left hemicolectomy extended hemicolectomy[citation needed]
sigmoidectomy It is a resection of the sigmoid colon, sometimes including part or all of the rectum (proctosigmoidectomy). When a sigmoidectomy is followed by terminal colostomy and closure of the rectal stump, it is called a Hartmann operation; this is usually done out of impossibility to perform a "double-barrel" or Mikulicz colostomy, which is preferred because it makes (...)

colorectal polyps with invasive adenocarcinoma ; Cancerised Adenoma; Malignant colorectal polyps
See also : colorectal adenoma
Invasion in pediculated polyp
See : Haggitt classification system
Haggitt
Haggitt defined the submucosal invasion in all sessile polyps as level 4 and therefore associated with bad outcome, independently of the affection or not of the resection margins.
Despite Haggitt’s classification has been widely used to evaluate the resection quality of endoscopic (...)